Windows 7: Sony Vaio display brightness problem

I have the same VAIO model and experienced the same problem once I formated system full of crappy trialware trash apps and installed clean Windows 7.



Solution is to use graphic drivers from Sony support webpage. They probably made some stupid modifications to drivers, so standard Intel drivers don't work and we are all doomed to use drivers from Sony only. :-(

Otherwise this notebook isn't bad. I got it new for 500€ one week ago.

I know this is an old post, but I had this same issue. For me, it turned out that is was a setting in the Vaio Control Panel: Display -> Automatic Brightness Settings -> Uncheck "Adjust Brightness Automatically". The screen was very dim before I unchecked this setting, and would fluctuate somewhat in brightness. Unchecking this made all the difference. I'm sure there are many reasons for this behavior, but wanted to post what helped me in case this is the same issue someone else may be having.

I tried all the suggestions on this thread but nothing worked - downloading Desktop Lighter seemed the best option but it still wasn't great as only changed the colouring to give the effect of lighter and darker.

Now I still can't use the function keys for brightness but this solution is so simple. I ended up asking my guys at theofficeproviders and they showed me instantly, felt pretty stupid as tech isn't even what they do but hey ho, they didn't make me feel too bad!

Ok go to 'Control Panel' , hit 'Appearance and Personalization' , hit 'Display' , hit 'Adjust Brightness' . Now I kept going in to the Power Plan options and messing around in there for ages. Ignore those options look down at the bottom of the main window and you will see the Screen Brightness scroller. I never saw it because I was being distracted by the powerplan options.

How simple is that?! Hope it's as easy on every Vaio. Mine's a VPCCB2MOE bought December 2011.

Hope it helps...

I have a Sony VAIO E series Model No. VPCEH3P1E/W..it came with windows 7 premimum 64 bit.but windows was in spaish,so i formatted c drive and installed the windows 7 ultimate 64 bit.I installed all the drivers,also the nvidia driver.Now evey thing is working fine,but brightness is not changing,neither from key board nor from display settings.In fact brightness settings are not appearing anywhere.Its working on full brightness.Please help me to resolve this issue..

Hi, im a user of a vaio VPCS111FM from mexico, and i also formated my laptop with windows 7 64 bits and the same problem, changing screen brightness doesnt change in screen, it stays dimmed always and tired of looking for solutions because anything has worked unfortumately, i would like to know if you were able to fix this issue
thanks

You have to edit registry key FeatureTestControl in:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}\0001 (OR 0000)

edit hexadecimal into fb20. It worked for me using Intel i3 core and should work for any intel graphics.

If NVIDIA the hexadecimal code is fb60

or try f900